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Graphene-based TiO2 photocatalysts for water decontamination: a brief overview of photocatalytic and antimicrobial performances


Affiliations
1 School of Environmental Studies, Cochin University of Science and Technology, Kochi 682 022, India; Department of Chemistry, Deva Matha College, Kuravilangad 686 633, India, India
2 School of Environmental Studies, Cochin University of Science and Technology, Kochi 682 022, India, India
 

This article highlights the major accomplishments in photocatalytic research and reported-antimicrobial acti­vities of graphene-based titanium dioxide (TiO2) hybrids. Special focus is given to the applications of TiO2–gra­phene and its major forms (TiO2–graphene oxide and TiO2–reduced graphene oxide) in wastewater treatments. Particularly, for systems envisaged for removing emerging micro-pollutants and microbial pathogens in real-life scenarios. The efficiency of the photocatalysts is found to be influenced by several factors, including the surface, chemical, morphological and interfacial characteristics of the hybrids. The mode of interaction of catalysts with pollutants, the percentage of graphene content and the nature of irradiation sources could alter the expected photocatalytic efficacy. It is concluded that the incorporation of graphene in TiO2 improves its photocatalytic performance by boosting photo-responsiveness and sup­pressing electron–hole recombination. The oxidative stress by reactive oxygen species and membrane stress due to the material’s physico-chemical properties account for the observed antimicrobial activities under controlled conditions of light irradiation.

Keywords

Antimicrobial performance, emerging conta-minants, photocatalytic activity, titanium dioxide–graphene nanocomposites, water treatment.
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  • Bhatia, V. and Dhir, A., Transition metal doped TiO2 mediated photocatalytic degradation of anti-inflammatory drug under solar irradiations. J. Environ. Chem. Eng., 2016, 4, 1267–1273.

  • Ola, O. and Maroto-Valer, M. M., Transition metal oxide based TiO2nanoparticles for visible light induced CO2 photoreduction. Appl. Catal. A, 2015, 502, 114–121.

  • Martins, N. C. T., Ângelo, J., Girão, A. V., Trindade, T., Andrade, L. and Mendes, A., N-doped carbon quantum dots/TiO2 composite with improved photocatalytic activity. Appl. Catal. B, 2016, 193,67–74.

  • Chung, J., Kim, S.-R. and Kim, J.-O., Fabrication and characteriza-tion of CdS doped TiO2 nanotube composite and its photocatalytic activity for the degradation of methyl orange. Water Sci. Technol.,2015, 72, 1341–1347.

  • Wu, G., Nishikawa, T., Ohtani, B. and Chen, A., Synthesis and Cha-racterization of carbon-doped TiO2 nanostructures with enhanced visible light response. Chem. Mater., 2007, 19, 4530–4537.

  • Shahrezaei, F., Pakravan, P., Azandaryani, A. H., Pirsaheb, M. and Mansouri, A. M., Preparation of multi-walled carbon nanotube-doped TiO2 composite and its application in petroleum refinery wastewater treatment. Desalin. Water Treat., 2016, 57, 14443–14452.

  • Da Meng, Z. et al., Fullerene modification CdSe/TiO2 and modifi-cation of photocatalytic activity under visible light. Nanoscale Res. Lett., 2013, 8, 1–10.

  • Bhanvase, B. A., Shende, T. P. and Sonawane, S. H., A review on gra-phene–TiO2 and doped graphene–TiO2 nanocomposite photocatalyst for water and wastewater treatment. Environ. Technol. Rev., 2017, 6, 1–14.

  • Lawal, A. T., Graphene-based nano composites and their applica-tions – a review. Biosens. Bioelectron., 2019, 141, 111384.

  • Zhu, Y. et al., Graphene and graphene oxide: synthesis, properties, and applications. Adv. Mater., 2010, 22, 3906–3924.11. Deshmukh, S. P., Kale, D. P., Kar, S., Shirsath, S. R., Bhanvase, B. A., Saharan, V. K. and Sonawane, S. H., Ultrasound assisted preparation of RGO/TiO2 nanocomposites for effective photocatalytic degradationof methylene blue under sunlight. Nanostruct. Nano-objects, 2020, 21, 100407.

  • Lambert, T. N. et al., Synthesis and characterization of titania–gra-phene nanocomposites. J. Phys. Chem. C, 2009, 113, 19812–19823.

  • Williams, G., Seger, B. and Kamat, P. V., TiO2–graphene nanocompo-sites. UV-assisted photocatalytic reduction of graphene oxide. ACS Nano, 2008, 2, 1487–1491.

  • Zhang, H., Lv, X., Li, Y., Wang, Y. and Li, J., P25–graphene com-posite as a high performance photocatalyst. ACS Nano, 2010, 4, 380–386.

  • Jiang, B. et al., Enhanced photocatalytic activity and electron transfer mechanisms of graphene/TiO2 with exposed {001} facets. J. Phys. Chem. C, 2011, 115, 23718–23725.

  • Wang, W. S., Wang, D. H., Qu, W. G., Lu, L. Q. and Xu, W., Large ultrathin anatase TiO2 nanosheets with exposed {001} facets on gra-phene for enhanced visible light photocatalytic activity. J. Phys. Chem. C, 2012, 116, 19893–19901.

  • Shah, M. S. A. S., Park, A. R., Zhang, K., Park, J. H. and Yoo, P.J., Green synthesis of biphasic TiO2-reduced graphene oxide nano-composites with highly enhanced photocatalytic activity. ACS Appl.Mater. Interfaces, 2012, 4, 3893–3901.

  • Byeon, J. H. and Kim, Y., Gas-phase self-assembly of highly orderedtitania@graphene nanoflakes for enhancement in photocatalytic acti-vity. ACSAppl. Mater. Interf., 2013, 5, 3959–3966.

  • Nguyen-Phan, T. D. et al., Uniform distribution of TiO2 nanocrystals on reduced graphene oxide sheets by the chelating ligands. J. Colloid Interf. Sci., 2012, 367, 139–147.

  • Sun, J., Zhang, Guo, L. and Zhao, L., Two-dimensional interface engi-neering of a titania–graphene nanosheet composite for improved photocatalytic activity. ACS Appl. Mater. Interf., 2013, 5, 13035–13041.

  • Byzynski, G. D., Volanti, P., Ribeiro, C., Mastelaro, V. R. and Longo, E., Direct photo-oxidation and superoxide radical as major responsible for dye photodegradation mechanism promoted by –TiO2–rGO heterostructure. J. Mater. Sci. Mater. Electron., 2018, 29,17022–17037.

  • Rosy, A. and Kalpana, G., Influence of RGO/TiO2 nanocomposite on photo-degrading Rhodamine B and rose bengal dye pollutants. Bull. Mater. Sci., 2018, 41, 2–9.

  • Shuang, S., Lv Ruitao, Cui, X., Xie, Z., Zheng, J. and Zhang, Z., Effi-cient photocatalysis with graphene oxide/Ag/Ag2S–TiO2 nanocompo-sites under visible light irradiation. RSC Adv., 2018, 8, 5784–5791.

  • Zhang, Q. et al., Advanced fabrication of chemically bonded graphene/TiO2 continuous fibers with enhanced broadband photocatalytic properties and involved mechanisms exploration. Sci. Rep., 2016, 6; https://doi.org/10.1038/srep38066/.

  • Li, K. et al., Design of graphene and silica co-doped titania composites with ordered mesostructure and their simulated sunlight photocatalytic performance towards atrazine degradation. Colloids Surf. A, 2013, 422, 90–99.

  • Minella, M., Sordello, F. and Minero, C., Photocatalytic process in TiO2/graphene hybrid materials. Evidence of charge separation by electron transfer from reduced graphene oxide to TiO2. Catal. Today, 2017, 281, 29–37.

  • Nosaka, Y. and Nosaka, A. Y., Generation and detection of reactive oxygen species in photocatalysis. Chem. Rev., 2017, 117, 11302–11336.

  • Wang, X., Zhang, J., Zhang, X. and Zhu, Y., Characterization, unifor-mity and photo-catalytic properties of graphene/TiO2 nanocompo-sites via Ramanmapping. Opt. Express, 2017, 25, 21496–21508.

  • Kusiak-Nejman, E. et al., Graphene oxide–TiO2 and reduced gra-phene oxide–TiO2 nanocomposites: insight in charge-carrier lifetime measurements. Catal. Today, 2017, 287, 189–195.

  • Lightcap, I. V., Kosel, T. H. and Kamat, P. V., Anchoring semicon-ductor and metal nanoparticles on a two-dimensional catalyst mat. Storing and shuttling electrons with reduced graphene oxide. Nano Lett., 2010, 10, 577–583.

  • Ferrighi, L., Fazio, G. and Di Valentin, C., Charge carriers separation at the graphene/(101) anatase TiO2 interface. Adv. Mater. Interf., 2016, 3, 1–7.

  • Yu, S. et al., Complex roles of solution chemistry on graphene oxide coagulation onto titanium dioxide: batch experiments, spectroscopy analysis and theoretical calculation. Sci. Rep., 2017, 7, 1–10.

  • Long, R., English, N. J. and Prezhdo, O. V., Photo-induced charge separation across the graphene–TiO2 interface is faster than energy losses: a time-domain ab initio analysis. J. Am. Chem. Soc., 2012, 134, 14238–14248.

  • Gillespie, P. N. O. and Martsinovich, N., Electronic structure and charge transfer in the TiO2 rutile (110)/graphene composite using hybrid DFT calculations. J. Phys. Chem. C, 2017, 121, 4158–4171.

  • Pastrana-Martínez, L. M. et al., Advanced nanostructured photoca-talysts based on reduced graphene oxide–TiO2 composites for degra-dation of diphenhydramine pharmaceutical and methyl orange dye.Appl. Catal. B, 2012, 123–124, 241–256.

  • Garrafa-Gálvez, H. E. et al., Graphene role in improved solar pho-tocatalytic performance of TiO2–RGO nanocomposite. Chem. Phys.,2018, 521, 35 43.

  • Fu, C. C., Juang, R. S., Huq, M. M. and TeHsieh, C., Enhanced adsorption and photodegradation of phenol in aqueous suspensions of titania/graphene oxide composite catalysts. J. Taiwan Inst. Chem. Eng., 2016, 67, 338–345.

  • Kim, S. R., Ali, I. and Kim, J. O., Phenol degradation using an ano-dized graphene-doped TiO2 nanotube composite under visible light.Appl. Surf. Sci., 2019, 477, 71–78.

  • Basheer, C., Application of titanium dioxide–graphene composite material for photocatalytic degradation of alkylphenols. J. Chem.,2013;https://doi.org/10.1155/2013/456586.

  • Ng, Y. H., Lightcap, I. V., Goodwin, K., Matsumura, M. and Kamat, P.V., To what extent do graphene scaffolds improve the photovoltaic and photocatalytic response of TiO2 nanostructured films? J. Phys. Chem. Lett., 2010, 1, 2222–2227.

  • Cruz, M. et al., Bare TiO2 and graphene oxide TiO2 photocatalysts on the degradation of selected pesticides and influence of the water matrix. Appl. Surf. Sci., 2017, 416, 1013–1021.

  • Sampaio, M. J. et al., Carbon-based TiO2 materials for the degra-dation of microcystin-LA. Appl. Catal. B, 2015, 170–171, 74–82.

  • Liu, J., Wang, L., Tang, J. and Ma, J., Photocatalytic degradation of commercially sourced naphthenic acids by TiO2–graphene composite nanomaterial. Chemosphere, 2016, 149, 328–335.

  • John, D., Yesodharan, S. and Achari, V. S., Integration of coagula-tion–flocculation and heterogeneous photocatalysis for the treatment of pulp and paper mill effluent. Environ. Technol., 2022, 43, 443–459; https://doi.org/10.1080/09593330.2020.1791972.

  • Zhang, H. et al., Synthesis and characterization of TiO2/graphene oxide nanocomposites for photoreduction of heavy metal ions in reverse osmosis concentrate. RSC Adv., 2018, 8, 34241–34251.

  • Zhang, Y., Hou, X., Sun, T. and Zhao, X., Calcination of reduced graphene oxide decorated TiO2 composites for recovery and reuse in photocatalytic applications. Ceram. Int., 2016, 43, 1150–1159.

  • Bhatia, V., Malekshoar, G., Dhir, A. and Ray, A. K., Enhanced pho-tocatalytic degradation of atenolol using graphene TiO2 composite. J. Photochem. Photobiol. A, 2017, 332, 182–187.

  • Karaolia, P. et al., Removal of antibiotics, antibiotic-resistant bac-teria and their associated genes by graphene-based TiO2 composite photocatalysts under solar radiation in urban wastewaters. Appl. Catal. B Environ., 2018, 224, 810–824.

  • John, D., Rajalaksmi, A. S., Lopez, R. M. and Achari, V. S., TiO2-reduced graphene oxide nanocomposites for the trace removal of diclofenac. SN Appl. Sci., 2020, 2, 840.

  • Moreira, N. F. F. et al., Solar treatment (H2O2, TiO2–P25 and GO–TiO2 photocatalysis, photo-Fenton) of organic micropollutants, human pathogen indicators, antibiotic resistant bacteria and related genes in urban wastewater. Water Res., 2018, 135, 195–206

  • .51. Lin, L., Wang, H., Jiang, W., Mkaouar, A. R. and Xu, P., Comparison study on photocatalytic oxidation of pharmaceuticals by TiO2–Fe and TiO2–reduced graphene oxide nanocomposites immobilized on optical fibers. J. Hazard. Mater., 2017, 333, 162–168.

  • Linley, S., Liu, Y., Ptacek, C. J., Blowes, D. W. and Gu, F. X.,Recyclable graphene oxide-supported titanium dioxide photocatalysts with tunable properties. ACS Appl. Mater. Interf., 2014, 6, 4658–4668.

  • Gholamvande, Z., Morrissey, A., Nolan, K. and Tobin, J., Graphene/TiO2 nano-composite for photocatalytic removal of pharmaceuticals from water. In Proceedings of IWAWCE-2012 Conference; http://keynote.conference-services.net/resources/444/2653/pdf/iwawce2012_0244.pd

  • Moranchel, A., Manassero, A., Satuf, L., Alfano, O. M., Casas, A. and Bahamonde, A., Influence of TIO2–rGO optical properties on the photoctalytic activity and efficiency to photodegrade an emerging pollutant. Appl. Catal. B, 2019, 246, 1–11.

  • Calza, P. et al., Photocatalytic transformation of the antipsychotic drug risperidone in aqueous media on reduced graphene oxide–TiO2 composites. Appl. Catal. B, 2016, 183, 96–106.

  • Lin, L., Wang, H. and Xu, P., Immobilized TiO2-reduced graphene oxide nanocomposites on optical fibers as high performance photocatalysts for degradation of pharmaceuticals. Chem. Eng. J.,2017, 310, 389–398.

  • Akhavan, O. and Ghaderi, E., Photocatalytic reduction of graphene oxide nanosheets on TiO2 thin film for photoinactivation of bacteria in solar light irradiation. J. Phys. Chem. C, 2009, 113, 20214–20220.

  • Cao, B., Cao, S., Dong, P., Gao, J. and Wang, J., High antibacterial activity of ultrafine TiO2/graphene sheets nanocomposites under visible light irradiation. Mater. Lett., 2013, 93, 349–352.

  • Kandiah, K., Muthusamy, P., Mohan, S. and Venkatachalam, R., TiO2–graphene nanocomposites for enhanced osteocalcin induc-tion. Mater. Sci. Eng. C, 2014, 38, 252–262.

  • Wanag, A. et al., Antibacterial properties of TiO2 modified with reduced graphene oxide. Ecotoxicol. Environ., 2018, 147, 788–793.

  • Liu, L.,Yang, X., Ye, L., Liu, M., Jia, S., Hou, Y. and Chu, L., Preparation and characterization of a photocatalytic antibacterial material: graphene oxide/TiO2/bacterial cellulose nanocomposite. Carbohydr. Polym., 2017, 174, 1078–1086.

  • Liu, L., Bai, H., Liu, J. and Sun, D. D., Multifunctional graphene oxide–TiO2–Ag nanocomposites for high performance water disinfection and decontamination under solar irradiation. J. Hazard. Mater., 2013, 261, 214–223.

  • Noreen, Z., Khalid, N. R., Abbasi, R., Javed, S., Ahmad, I. and Bokhari, H., Visible light sensitive Ag/TiO2/graphene composite as a potential coating material for control of Campylobacter jejuni. Mater. Sci. Eng. C, 2019, 98, 125–133.

  • Yang, X., Qin, J., Jiang, Y., Rong, Li., Yang, Li. and Tang, H., Bi-functional TiO2/Ag3PO4/graphene composites with superior visible light photocatalytic performance and synergistic inactivation of bacteria. RSC Adv., 2014, 4, 18627–18636.

  • He, W. et al., Photocatalytic and antibacterial properties of Au–TiO2nanocomposite on monolayer graphene: from experiment to theory. J. Appl. Phys., 2013, 114, 204701.

  • Chang, Y., Ou, X., Zeng, G., Gong, J. and Deng, C., Synthesis of magnetic graphene oxide–TiO2 and their antibacterial properties under solar irradiation. Appl. Surf. Sci., 2015, 343, 1–10.

  • John, D., Jose, J., Bhat, S. G. and Achari, V. S., Integration of heterogeneous photocatalysis and persulfate based oxidation using TiO2-reduced graphene oxide for water decontamination and disinfection. Heliyon, 2021, 7; https://doi.org/10.1016/j.heliyon.2021.e07451.

  • Dhanasekar, M. et al., Ambient light antimicrobial activity of reduced graphene oxide supported metal doped TiO2 nanoparticles and their PVA-based polymer nanocomposite films. Mater. Res. Bull., 2018, 97, 238–243.

  • Stan, M. S. et al., Reduced graphene oxide/TiO2 nanocomposites coating of cotton fabrics with antibacterial and self-cleaning properties. J. Ind. Text., 2019, 49, 277–293.

  • Achari, V. S., Lopez, R. M., Rajalekshmi, A. S., Jayasree, S., Ravin-dran, B. and Sekkar, V., Scavanging nitrophenol from aquatic efflu-ents with triethylamine catalyzed ambient pressure dried carbon aerogel. J. Environ. Chem. Eng., 2020, 8, 103760; https://doi.org/10.1016/j.jece.2020.103670.

  • Achari, V. S., Lopez, R. M., Rajalakshmi, A. S., Jayasree, S.,Shibin, O. M., John, D. and Sekkar, V., Microporous carbon with highly dispersed nano-lanthanum oxide (La2O3) for enhanced ad-sorption of methylene blue. Sep. Purif. Technol., 2021, 279, 119626; https://doi.org/10.1016/j.seppur.2021.119626.

  • Achari V. S., Lopez, R. M., Jayasree, S. and Rajalakshmi, A. S.,Lanthanum ion impregnated granular activated carbon for the removal of phenol from aqueous solution: equilibrium and kinetic study. Int.J. Chem. Kinet., 2019, 51, 215–231; https://doi.org/10.1002/kin.21245.

  • Cruz-Ortiz, B. R. et al., Mechanism of photocatalytic disinfection using titania–graphene composites under UV and visible irradiation.Chem. Eng. J., 2017, 316, 179–186.


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  • Graphene-based TiO2 photocatalysts for water decontamination: a brief overview of photocatalytic and antimicrobial performances

Abstract Views: 312  |  PDF Views: 140

Authors

Deepthi John
School of Environmental Studies, Cochin University of Science and Technology, Kochi 682 022, India; Department of Chemistry, Deva Matha College, Kuravilangad 686 633, India, India
V. Sivanandan Achari
School of Environmental Studies, Cochin University of Science and Technology, Kochi 682 022, India, India

Abstract


This article highlights the major accomplishments in photocatalytic research and reported-antimicrobial acti­vities of graphene-based titanium dioxide (TiO2) hybrids. Special focus is given to the applications of TiO2–gra­phene and its major forms (TiO2–graphene oxide and TiO2–reduced graphene oxide) in wastewater treatments. Particularly, for systems envisaged for removing emerging micro-pollutants and microbial pathogens in real-life scenarios. The efficiency of the photocatalysts is found to be influenced by several factors, including the surface, chemical, morphological and interfacial characteristics of the hybrids. The mode of interaction of catalysts with pollutants, the percentage of graphene content and the nature of irradiation sources could alter the expected photocatalytic efficacy. It is concluded that the incorporation of graphene in TiO2 improves its photocatalytic performance by boosting photo-responsiveness and sup­pressing electron–hole recombination. The oxidative stress by reactive oxygen species and membrane stress due to the material’s physico-chemical properties account for the observed antimicrobial activities under controlled conditions of light irradiation.

Keywords


Antimicrobial performance, emerging conta-minants, photocatalytic activity, titanium dioxide–graphene nanocomposites, water treatment.

References





DOI: https://doi.org/10.18520/cs%2Fv123%2Fi9%2F1089-1100